`mail.css-sumisei.com`

	DNSSEC	⚠️ Not signed
	A	202.225.201.81^{🇯🇵 BIGLOBE202.225.0.0/16 CIDR BLOCK 1}

`css-sumisei.com`

	DNSSEC	⚠️ Not signed
	NS	`asns1.customer.ne.jp` ⭐
	NS	`asns2.customer.ne.jp`
	MX	`csssumisei-com0i.mail.protection.outlook.com` ⭐
	TXT	`v=spf1 include:smp.ne.jp include:_prspf8n.guardianwall.jp ~all`
	SOA	`asns1.customer.ne.jp`css-system@css-osaka.com serial=1494294868

Previously MX for

css-sumisei.com

Same first word

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DNS History

1 record (1 active, 0 former)

●A202.225.201.812017-08-13 → 2026-03-27 · 2 obs

● 2017-08-13 16:57:04
● 2026-03-27 06:23:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
css-sumisei.com	asns1.customer.ne.jp, asns2.customer.ne.jp	-

✅ Authoritative Response

Server:210.150.254.94

NS records: asns1.customer.ne.jp, asns2.customer.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for css-sumisei.com (unsigned zone)

⏱️ Timing

Total: 1406ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.225.201.81`

Analysis

IP Addresses

mail.css-sumisei.com points to a single IP number: 202.225.201.81.

Other host names, for instance mailserver.green-tower.co.jp, mailserver.sumisei-sis.co.jp, mailserver.ssj.or.jp, mailserver.slcs.co.jp and mailserver.slbm.co.jp share IP numbers with mail.css-sumisei.com.

mail.css-sumisei.com - robtex.com